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mac•ro•ev•o•lu•tion



Pronunciation: (mak"rō-ev"u-lOO'shun or, esp. Brit., -ē"vu-), [key]
n. Biol.
major evolutionary transition from one type of organism to another occurring at the level of the species and higher taxa.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

macroetchmacroform
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